TL:DR — install the heroku-builds plugin locally and cancel via their CLI
Were you a bit too eager with your kicking off a deploy? Did you suddenly remember that embarrassing console.log you don’t really want the world to see?
There’s currently no way of cancelling builds through the heroku UI on dashboard.heroku.com .
How to do it
Install the heroku-builds plugin and cancel via the CLI.
# from the terminalheroku plugins:install heroku-buildsheroku builds:cancel -a app-name